Add third_party libs

1 files changed, 78 insertions, 0 deletions

diff --git a/third_party/windows/fltk-1.1.10/test/trackball.h b/third_party/windows/fltk-1.1.10/test/trackball.h
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+++ b/third_party/windows/fltk-1.1.10/test/trackball.h
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+/*

+ * (c) Copyright 1993, 1994, Silicon Graphics, Inc.

+ * ALL RIGHTS RESERVED

+ * Permission to use, copy, modify, and distribute this software for

+ * any purpose and without fee is hereby granted, provided that the above

+ * copyright notice appear in all copies and that both the copyright notice

+ * and this permission notice appear in supporting documentation, and that

+ * the name of Silicon Graphics, Inc. not be used in advertising

+ * or publicity pertaining to distribution of the software without specific,

+ * written prior permission.

+ *

+ * THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"

+ * AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,

+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR

+ * FITNESS FOR A PARTICULAR PURPOSE.  IN NO EVENT SHALL SILICON

+ * GRAPHICS, INC.  BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,

+ * SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY

+ * KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,

+ * LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF

+ * THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC.  HAS BEEN

+ * ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON

+ * ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE

+ * POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.

+ *

+ * US Government Users Restricted Rights

+ * Use, duplication, or disclosure by the Government is subject to

+ * restrictions set forth in FAR 52.227.19(c)(2) or subparagraph

+ * (c)(1)(ii) of the Rights in Technical Data and Computer Software

+ * clause at DFARS 252.227-7013 and/or in similar or successor

+ * clauses in the FAR or the DOD or NASA FAR Supplement.

+ * Unpublished-- rights reserved under the copyright laws of the

+ * United States.  Contractor/manufacturer is Silicon Graphics,

+ * Inc., 2011 N.  Shoreline Blvd., Mountain View, CA 94039-7311.

+ *

+ * OpenGL(TM) is a trademark of Silicon Graphics, Inc.

+ */

+/*

+ * trackball.h

+ * A virtual trackball implementation

+ * Written by Gavin Bell for Silicon Graphics, November 1988.

+ */

+

+/*

+ * Pass the x and y coordinates of the last and current positions of

+ * the mouse, scaled so they are from (-1.0 ... 1.0).

+ *

+ * The resulting rotation is returned as a quaternion rotation in the

+ * first paramater.

+ */

+void

+trackball(float q[4], float p1x, float p1y, float p2x, float p2y);

+

+/*

+ * Given two quaternions, add them together to get a third quaternion.

+ * Adding quaternions to get a compound rotation is analagous to adding

+ * translations to get a compound translation.  When incrementally

+ * adding rotations, the first argument here should be the new

+ * rotation, the second and third the total rotation (which will be

+ * over-written with the resulting new total rotation).

+ */

+void

+add_quats(float *q1, float *q2, float *dest);

+

+/*

+ * A useful function, builds a rotation matrix in Matrix based on

+ * given quaternion.

+ */

+void

+build_rotmatrix(float m[4][4], float q[4]);

+

+/*

+ * This function computes a quaternion based on an axis (defined by

+ * the given vector) and an angle about which to rotate.  The angle is

+ * expressed in radians.  The result is put into the third argument.

+ */

+void

+axis_to_quat(float a[3], float phi, float q[4]);

+